A plaque commemorates the birth of the noted author Jack London, January 12, 1876, with the text "TO MARK THE BIRTHPLACE OF THE NOTED AUTHOR JACK LONDON" and "THE ORIGINAL HOME ON THIS SITE THAN KNOWN AS 615 THIRD STREET WAS DISRUPTED IN THE FIRE OF APRIL 18 1906 PLACED BY THE CALIFORNIA HISTORICAL SOCIETY JANUARY 12, 1953".